Oven



Aug. 24 1926.

O.PORBECK OVEN Filed June 8. 1925 2 Shets-Sheet l Aug. 24 1926.

O. PORBECK` OVEN Filed June a, 1923 2 Sheets-Sheet 2 Eme/23701 /afec l lllllllll/ ia @7m/4% @daga/$9.2

Patented ug. 24, 1926.

UNITEDv STATES 1,596,890 PATENT oFFicE.

OTTQ PORBECK, OF ST. LOUIS, MISSOURI.

Application tiled June 8,

This invention relates to new and useful improvements in industrial .ovens and the objects of the invention are to provide an oven the walls of which are formed of sectional units thereby facilitating shipping and erecting of the oven and providing standardized wall units so that ovens of various sizes can be built.

Further objects of the invention are to provide an oven the walls of which are so constructed that they effectively insulate the heat in the oven and prevent dissipation or loss of heat through said walls.

Still further objects of the invention are to construct the' wall panels or sections of the oven of spaced sheet metal wall members, the intervening space between said members being filled with suitable heat insulating material and to construct the joints of said wall members so that they form a strong and durable structure and said wall-members do not come in direct contact with each other but are insulated by suitable material interposed between the edges of said wall members so as to prevent heat radiation through the outer wall member.

Other objects of the invention are to provide simple and improved heat radiating means for said oven and to provide improved and highly efficient means for con-4 ducting fumes and vapors away from said oven.

With these and other objects in view, my invention consists in certain novel features of construction and arrangement of parts hereinafter more fully described and claimed, and shown in the accompanying drawings, in which- Figure 1 is a front elevational view of the oven.

Figure 2 is a side elevational view of the oven.

Figure 3 is an enlarged plan view partly in cross section of the rear end of the oven.

Figure 4 is a horizontal cross section taken on line 4 4 of Figure 1.

Figure 5 is a vertical cross section taken through one side of the oven and partly broken away. A

Figure 6 is a vertical cross section parti broken away taken longitudinally through1 the roof or top wall of the oven.

Figure 7 is a perspective detail view of one of the wall sections or units.

1923. Serial No. 644,287.

Figure 8 is a horizontal cross section taken on line 8-8 of Figure 7.

Figure 9 is a horizontal cross section taken through a modified form-of the wall section. y

Referring by numerals to the accompanying drawings, 1()` designates the oven or housing comprising front wall or door panels 11, and a top panel 12; a bottom wall 13; side wall sections or panels 14; rear wall panels or sections 15, and top wall panels or roof sections 16. Each wall section com-prises an inner wall member 17 having side portions 18 bent laterally, and an outer wall member 19 having laterally projecting rebent side portions 20 which latter are designed to receive and hold the edges .of side portions 18 of member 17. 1n order to prevent the inner wall member from coming in Contact with outer wall member 19, a sheet of asbestos or other heat insulating material 21 is placed in the grooves formed in the rebent to form a lining therefor and insulate the edges of portions 18 from wall member 19. The space formed by members 17 and 19 is filled with any suitable heat insulatin material 22. The lower edges of walls 1% and 19 are received and held in suitable seats formed in the bottom end member 24 which' is lined and insulated ltfrom twall members 19 and 17 byv suitable acking or heat insulating material 25. e upper edges of wall members 17 and 19 are seated in a top end member 26 which is provided with insulating material 27 to prevent the radiation of heat from inner wall member 17 thrfrngh top end member 26. The side portions 18 and 21 of the side and rear wall sections are provided with suitable apertures 28 which receive tie rods 29 which extend the full length of the oven and have their front ends secured by nuts 30 to the front wall panels` 11 and their rear ends by nuts 31 to the rear wall panels 15. Similar rods 32 are used to secure together the rear wall panels 15 and the ends of these rods 32 are secured by nuts'34 to the rearwardly projecting rebent portions 35 formed on the outer wall members to rear wall sections 15.

The tops of roof sections 16 are similar in construction to side wall sections 14 and extend transversely of the oven and have their ends supported on the tops of side wall 'rtions 2O sections 14. Sections 16 are supported in osition on side walls 14 by means of angle 1rons 36 which aresecured to the ends of said sections and have their horizontal flanges which project past the ends of sections 16 adapted to rest on the top ,'ends of side walls 14 as shown in Figures 3 and 5. Thus end angles 36 servenot only to support roof sections 16 in position but also to seal the joint between sald roof sections and the side wall sections 14. Each roof section 16 is provided on one of its sides with a longitudinally disposed angle'iron 37 whlch has its horizontal flan e lapped over the upwardly presented si e ortion of the. ad- 'oining roof section there y sealing the joint etween the two sections.

The front wall or door panels 11 are similar in construction to the side row of panels 14 having an inner wall member 38 and an outer wall member 39 which are joined and insulated from each other and the inner edges of said panels arev offset as indi- `able source of heat and prefera cated at 40, for the reception of doors 41 which are hinged at 42 to the respective door panels 11. These doors which lare of the double wall construction, already described, have their meeting edges disposed to form an air tight joint when the door is closed as shown at 44 in Figure 4.

The oven is heated by means of heatin sections or radiators 45 which are arrange on each side of the oven adjacent tothe side walls thereof. Each heatin section consists of an inner corrugate wall 46 and a rear wall 47, said walls being connected together at to and bottom to prevent the escape or lea age of hot gases or air from the heating section into the oven. Extending from the rear wall 47 into each corrugation is a bae plate 48 which terminates a slightr distance away from the crown of the corrugation and forces the ascending hot gases or air to enter each corrugation and come in close contact with the inner or radiating wall of the heating section. The sections are heated by an suitly y gas or oil burner 49 which is located in the forward end of one of the sections. The rear ends of the heating sections 45 are connected by a pipe 50 so that the hot air or gases may pass from the section in which the source of heat is located into the opposite section from which it is then exhausted by a flue 51 located outwardly of the oven and connected to the forward end of the res ctive heating section. The forward en of the heating section in which burner 49 is located is preferably lined for a suitn able distance with fire brlck 52. Where oil is used as a source of heat, burner 49 is connected to an air pipe 54 and an oil suppl pipe 55 'and is controlled by a valve 56. ventilator 57 is located in one of the roof or radiating `58 is arranged adjacent to the rear wall of said oven and the lower end of said venti lator terminates a slight distance abovepthe bottom of iioor 13 of the oven. This ventilator serves to discharge heavy fumes and r vapors from the lower art of the oven. Thus an eicient ventilat1on of the oven is obtained whereby all of the fumes given oif during the drying or baking process are readily discharged from the oven. The arrangement of the heating sections in the oven and their connections insure the passage of hot air and gas through both the heatin sections before the flue is reached.

In t e modified form shown in Figure 9 both the inner wall member 59 and outer wall member 60 are formed alike, both being provided with laterally presented rebent side portions 59a and 60", respectively, l for receiving the side edges of plates 61 which serve to space said wall members fromeach other and close the ends thereof to form a compartment for receiving the heat insulation material. The edges of plate 61 are insulated from the rebent seat portions of the respective wall members by sheets of asbestos or other heat insulating material 62 arranged in said seats.

I claim:

1. In an oven lof the class described, a wall therefor comprising an .inner wall member, and an outer wall member spaced from the first member, one of said members having its side portions terminating in longitudinally disposed channels having paralel side walls and the other member being provided with side portions bent at right angles to the body portion and having its l edges seated in said channels, and means for insulating said edges from said channels to prevent direct contact between said members and the consequent dissipation of heat throulgh the outer wall member.

2. n an oven wall construction an inner wall member having its side ed es bent at right angles, an outer wall memlger provided with rebent side portions U-shaped in cross section adapted to disk the bent edges of said inner wall member, a heat .insulating ller for the intervening space between said wall members, and a sheet of heat insulating -material interposed between the interengaged portions of said wall members to prevent said members from contacting with each other.

3. In an oven of the class described, a wall section comprising an inner wall member having laterally bent side portions, an outer wall 4member provided on its sides with rebent portions to form U-shaped seats .for the edges of said laterally bent portions,

a sheet of non-conducting material lining 130 1,5ee,seo

each seat for insulating the inner Wall member from the outer wall member, end wall members provided with U-shaped seats for receiving the end edges of said side wall members and' insulation material for insu lating said inner wall member from said end wall members. l

4. A wall structure for ovens comprising in combination an inner sheet member having side portions bent outwardly at right angles to the body portion, an outer sheet member havin side portions bent outwardly, then inwar l to provide vertically disposed channels having parallel side walls for receiving the edges of the side portions of said inner member, and sheets of heat nonconducting material arranged in said channels for reventing direct contact between said mem ers.

5. In a wall construction, a wall member having its edges rebent in U-shape to form pockets rectangular in cross section, a lining of heat insulating material arranged within said pocket and another wall member spaced from the lirst wall member and having its edges bent at right angles and vseated in said pockets, said insulation lining preventing the two wall members from coming in contact with each other.

6. An oven wall construction com rising spaced wall members, one of which as its side edges bent laterally in U-shape form to,

form vertically disposed pockets and the other member has its side ed es bent at ri ht angles for seating straight edges in said pockets, and a lining of heat insulating material arranged in each pocket and insulating said wall members from each other.

7. A wall structure for ovens comprising in combination an inner sheet member having side portions bent outwardly at right angles to the body portion, an outer sheet member having side portions bent to form verticall disposed channels havingparallel side wal s for receiving the edges of the side portions of said inner sheet member, a sheet of heat non-conducting material arran ed in each channel for preventing contact etween said members, and end members each of which is provided with a pair of spaced horizontally disposed channels for receiving the end edges of said sheet members.

8. An oven wall construction comprising spaced side wall members, one of which has its side edges bent laterally to form vertically disposed and inwardly presented channel-shaped pockets and the other has its side edges bent laterally and outwardly for entering said pockets, a lining of heat insulating material arranged in each pocket and insulating said wall members from each other, and wall members provided with horizontally disposed channel-shaped pockets for receiving the end edges of said side wall members, and insulation material linin the inner faces of said ockets and insu ating said wall members om each other. In testimony whereof I hereunto aiix my signature this fourth day'of June, 1923.

OTTO PORBECK. 

